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drm/amd/pm: Add xgmi plpd to aldebaran pm_policy

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On aldebaran, allow changing xgmi plpd policy through
'pm_policy/xgmi_plpd' sysfs interface.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2024-03-04 12:03:08 +05:30 committed by Alex Deucher
parent 20897c6e71
commit 7794e99848
1 changed files with 36 additions and 0 deletions
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36
drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
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@ -266,9 +266,31 @@ static int aldebaran_tables_init(struct smu_context *smu)
return 0;
}
static int aldebaran_select_plpd_policy(struct smu_context *smu, int level)
{
struct amdgpu_device *adev = smu->adev;
/* The message only works on master die and NACK will be sent
* back for other dies, only send it on master die.
*/
if (adev->smuio.funcs->get_socket_id(adev) ||
adev->smuio.funcs->get_die_id(adev))
return 0;
if (level == XGMI_PLPD_DEFAULT)
return smu_cmn_send_smc_msg_with_param(
smu, SMU_MSG_GmiPwrDnControl, 0, NULL);
else if (level == XGMI_PLPD_DISALLOW)
return smu_cmn_send_smc_msg_with_param(
smu, SMU_MSG_GmiPwrDnControl, 1, NULL);
else
return -EINVAL;
}
static int aldebaran_allocate_dpm_context(struct smu_context *smu)
{
struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
struct smu_dpm_policy *policy;
smu_dpm->dpm_context = kzalloc(sizeof(struct smu_13_0_dpm_context),
GFP_KERNEL);
@ -276,6 +298,20 @@ static int aldebaran_allocate_dpm_context(struct smu_context *smu)
return -ENOMEM;
smu_dpm->dpm_context_size = sizeof(struct smu_13_0_dpm_context);
smu_dpm->dpm_policies =
kzalloc(sizeof(struct smu_dpm_policy_ctxt), GFP_KERNEL);
if (!smu_dpm->dpm_policies)
return -ENOMEM;
policy = &(smu_dpm->dpm_policies->policies[0]);
policy->policy_type = PP_PM_POLICY_XGMI_PLPD;
policy->level_mask = BIT(XGMI_PLPD_DISALLOW) | BIT(XGMI_PLPD_DEFAULT);
policy->current_level = XGMI_PLPD_DEFAULT;
policy->set_policy = aldebaran_select_plpd_policy;
smu_cmn_generic_plpd_policy_desc(policy);
smu_dpm->dpm_policies->policy_mask |= BIT(PP_PM_POLICY_XGMI_PLPD);
return 0;
}